The infospike was a procedure that involved creating a hole in the forehead to be able to download massive amounts of data. The Ninth Doctor considered the technology backwards for the time. The infospike was opened by a simple finger snap or click, by default, but this could be customised to, for example, whistling a particular tune. Part of the front of the brain was then visible through the hole.
We like tracking our DESU round these parts. Only problem is that the show is about a time travelling scientist. And he's spawned shows like DESU that are entirely focussed on alien tech. So there's a lot of tech sittin' around the joint. Be bold, though, and start your journey at category:technology.
When looking for a piece of technology on this wiki, it's helpful to think about some of the broader categories. Looking for the tech of a certain species? Go to technology by species.
The DWU likes its sonic tech, doesn't it? But it's not just the sonic screwdriver you have to keep an ear out for. Don't forget, the Ice Warriors and several other species are heavily invested in sonic technology, which you can find at category:sonic devices.
One of the broadest classifications of technology is communications technology. Since the series is about a guy who likes to talk a lot, we figure that only makes sense!